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https://www.readbyqxmd.com/read/28545014/paracetamol-causes-endocrine-disruption-and-hepatotoxicity-in-male-fish-rhamdia-quelen-after-subchronic-exposure
#1
Izonete Cristina Guiloski, João Luiz Coelho Ribas, Laercio Dante Stein Piancini, Ana Carolina Dagostim, Silvana Maris Cirio, Luis Fernando Fávaro, Suelen Lúcio Boschen, Marta Margarete Cestari, Cláudio da Cunha, Helena Cristina Silva de Assis
Paracetamol is one of the most widely sold non-prescription drugs. This study aimed to evaluate the effects of the paracetamol on reproductive, biochemical, genetic, histopathological and hematogical biomarkers by waterborne exposure. Male fish of Rhamdia quelen were exposed to environmental concentrations of paracetamol (0, 0.25, 2.5μg/L) in a semi-static bioassay for 21days. Hemoglobin and hematocrit were reduced upon exposure to 0.25μg/L of paracetamol. Leukocytes and thrombocytes increased after paracetamol exposure...
May 8, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28544938/sex-steroids-and-metabolic-responses-in-mussels-mytilus-galloprovincialis-exposed-to-drospirenone
#2
Tiziana Cappello, Denise Fernandes, Maria Maisano, Andrea Casano, Marta Bonastre, Maria João Bebianno, Angela Mauceri, Salvatore Fasulo, Cinta Porte
Drospirenone (DRO) is a synthetic progestin derived from 17α-spironolactone with a pharmacological mechanism of action similar to progesterone. Despite its wide use as pharmaceutical and consequent continuous release into the aquatic environment, DRO effects have been poorly investigated on aquatic biota. In order to unravel the toxicity mechanisms of DRO, mussels Mytilus galloprovincialis were exposed for 7 days to different concentrations of DRO, namely 20ng/L (Low; L), 200ng/L (Medium; M), 2000ng/L (High; H) and 10μg/L (Super High; SH) nominal doses...
May 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28544433/gynecological-challenges-in-the-diagnosis-and-care-of-patients-with-dsd-the-role-of-the-obstetrician-gynecologist-in-the-multidisciplinary-approach-to-the-patient
#3
Veronica Gomez-Lobo, Anne-Marie Amies Oelschlager
Disorders (differences) of sex development (DSD) are identified when there is atypical chromosomal, gonadal, or anatomic sex. Given the complexity of DSD conditions, the consensus guidelines recommend that affected individuals be evaluated and cared for by teams with expertise in DSD conditions. Obstetrician gynecologists are experts in genital and reproductive anatomy, hormonal function, fertility, sexuality, and obstetrics, allowing them to provide a unique and essential function within the DSD team. Furthermore, obstetrician gynecologists with expertise in Pediatric and Adolescent Gynecology may follow individuals from birth into adulthood and provide reproductive health care for all ages, allowing these patients to "grow up" with them...
May 25, 2017: American Journal of Medical Genetics. Part C, Seminars in Medical Genetics
https://www.readbyqxmd.com/read/28544399/molecular-species-of-prostaglandins-involved-in-modulating-luteinizing-hormone-pulses-of-female-rats-under-infectious-stress-conditions
#4
Takashi Matsuwaki, Mugiko Komatsuda, Ayano Fujisawa, Mio Doke, Keitaro Yamanouchi, Masugi Nishihara
Mammalian reproductive function is controlled by the hypothalamus-pituitary-gonadal (HPG) axis, which is suppressed under infectious stress conditions. We have previously demonstrated, by analyzing the pulsatility of luteinizing hormone (LH), that prostaglandins (PGs) in the central nervous system (CNS) mediate infectious stress to suppress the activity of the HPG axis. The aim of the present study is to characterize the types of PGs responsible for suppression of the HPG axis. We focused on 3 major types of PGs, i...
May 19, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28544305/a-practical-guide-for-evaluating-gonadal-germ-cell-tumor-predisposition-in-differences-of-sex-development
#5
REVIEW
Louise C Pyle, Katherine L Nathanson
Differences of Sex Development (DSD) includes a wide spectrum of etiologies and phenotypes. A subset of individuals with DSDs are predisposed to gonadal germ cell tumor (GCT). In this setting, GCT risk varies widely, depending on the DSD molecular etiology and penetrance. Prognostication based on molecular diagnosis remains challenging, as natural history data specific to recently identified molecular causes of DSD is lacking. In this review, we provide a framework for the clinical geneticist to consider GCT tumor risk in the patient with DSD...
May 25, 2017: American Journal of Medical Genetics. Part C, Seminars in Medical Genetics
https://www.readbyqxmd.com/read/28543866/testicular-structure-and-seminal-pathway-in-the-yellowtail-tetra-astyanax-altiparanae-characiforms-characidae
#6
D H de Siqueira-Silva, A P Dos Santos-Silva, C Bashiyo-Silva, M S Rodrigues, C A Vicentini, A Ninhaus-Silveira, R Veríssimo-Silveira
This study aimed to describe testicular and its main ducts structure in the yellowtail tetra Astyanax altiparanae, contributing to the knowledge of the region in which semen is produced, storage and released, focusing mainly on the dynamic of germinal epithelium and Sertoli cells during germ cell maturation. Ten sexually mature male A. altiparanae had their testes processed according to the routine protocols to optical microscopy. Moreover, spermatic ducts and tubular compartment of the testes of three specimens were perfused with vinyl resin for gross anatomy and scanning electron microscopy...
May 22, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28543860/a-unique-case-of-bilateral-ovarian-splenosis-and-review-of-the-literature
#7
Maria Giulia Disanto, Francesca Mercalli, Andrea Palicelli, Alberto Arnulfo, Renzo Boldorini
Splenosis is an acquired anomaly related to heterotopic auto-transplantation of splenic tissue following abdominal trauma or splenectomy. We report the first definitive bilateral ovarian case in a 65-year-old woman who underwent splenectomy following a motor vehicle accident 44 years prior to presentation. We review the literature and discuss the main differential diagnoses. Gross examination revealed a 1-cm well-circumscribed dark nodule on the surface of each ovary. Paraffin-embedded, formalin-fixed blocks were sectioned and stained with hematoxylin-eosin and immunostains (CK5/6, Calretinin, WT1, Vimentin)...
May 25, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28543786/immunohistochemical-colocalization-of-g-protein-alpha-subunits-and-5-ht-in-the-rectal-gland-of-the-cartilaginous-fish-scyliorhinus-canicula
#8
E R Lauriano, S Pergolizzi, J Gangemi, M Kuciel, G Capillo, M Aragona, C Faggio
Serotonin [5-hydroxytryptamine (5-HT)] is an important neuromodulator involved in a wide range of physiological functions. The effects of serotonin are mediated by an extended family of receptors coupled to multiple heterotrimeric G-proteins, associated with cellular membrane. G proteins connect receptors to effectors and thus trigger intracellular signaling pathways. These cellular processes several regulate systemic functions such as embryonic development, gonadal development, learning and memory, and organismal homeostasis...
May 22, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28541571/childhood-adolescent-and-young-adult-cancer-incidence-in-japan-in-2009-2011
#9
Kota Katanoda, Akiko Shibata, Tomohiro Matsuda, Megumi Hori, Kayo Nakata, Yoshitaka Narita, Chitose Ogawa, Wataru Munakata, Akira Kawai, Hiroshi Nishimoto
Little is known about cancer incidence among children and youths in Japan. We aimed to describe cancer incidence in Japan focusing on childhood, adolescence and young adulthood (AYA). Cancer incidence data were obtained from the Monitoring of Cancer Incidence in Japan project. For the 2009-2011 incidence, the data were collected from 40 prefectures, of which data from 27 prefectures meeting quality standards were analyzed (population coverage: 38.6%). Cancers diagnosed in 0-39 years of age were classified according to the International Classification of Childhood Cancer (version 3)...
May 24, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28540054/primary-retroperitoneal-mature-cystic-teratoma-dermoid-cyst-in-a-51-year-old-male-case-report-and-historical-literature-review
#10
Andrew Tiu, Vinayak Sovani, Nasir Khan, Shveta Hooda
OBJECTIVES: Primary retroperitoneal mature cystic teratomas are exceedingly uncommon in males aged 50 years and above, and only seven cases have been reported in the literature so far. They usually occur in infants less than 6 months and young females. The aim of this article is to present a rare case of a 51-year-old male with a primary retroperitoneal mature cystic teratoma located in the right infrarenal area adherent to the psoas muscle and to discuss a historical literature review...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28536798/pollutants-induced-oxidative-stress-dna-damage-and-cellular-deformities-in-clarias-gariepinus-burchell-from-river-yamuna-in-delhi-region-india
#11
Anil K Tyor, Kanika Pahwa
The purpose of the present study was to evaluate the severity of pollution impact at two extreme sites of river Yamuna in Delhi region utilizing oxidative stress, genotoxic and histopathological biomarkers in gonad (ovary) of Clarias gariepinus. To evaluate oxidative stress, TBAR's and ferric reducing antioxidant power (FRAP) assay were employed while comet assay and classic histology were used to estimate genotoxicity and cellular damage respectively. The results indicated significant increase (p < 0...
May 23, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28535943/pragmatic-approach-to-intersex-including-genital-ambiguity-in-the-newborn
#12
Kanthi Bangalore Krishna, Christopher P Houk, Peter A Lee
The evaluation and management of a newborn with ambiguous genitalia must be undertaken as quickly as possible and with great sensitivity for the child's family. Where possible, a comprehensive team approach with a pediatric urologist, endocrinologist, geneticist, neonatologist, and child psychiatrist/psychologist should work closely with the family to establish the diagnosis and determine gender. Although the preferred gender assignment is not always clear, a thorough examination of endocrine function, karyotype, and potential for fertility should guide the determination...
May 20, 2017: Seminars in Perinatology
https://www.readbyqxmd.com/read/28535920/cyberknife%C3%A2-m6%C3%A2-peripheral-dose-evaluation-for-brain-treatments
#13
N Delaby, J Bellec, J Bouvier, F Jouyaux, M Perdrieux, J Castelli, I Lecouillard, J P Manens, C Lafond
PURPOSE: This study evaluates the peripheral dose (PD) delivered to healthy tissues for brain stereotactic radiotherapy treatments (SRT) performed with a CyberKnife M6™ Robotic Radiosurgery System and proposes a model to estimate PD before treatment. METHOD: PD was measured with thermoluminescent dosimeters. Measurements were performed to evaluate the influence of distance, collimator type (fixed or Iris™) and aperture size on PD for typical brain treatment plans simulated on an anthropomorphic phantom...
May 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28533820/medip-seq-and-ncpg-analyses-illuminate-sexually-dimorphic-methylation-of-gonadal-development-genes-with-high-historic-methylation-in-turtle-hatchlings-with-temperature-dependent-sex-determination
#14
Srihari Radhakrishnan, Robert Literman, Beatriz Mizoguchi, Nicole Valenzuela
BACKGROUND: DNA methylation alters gene expression but not DNA sequence and mediates some cases of phenotypic plasticity. Temperature-dependent sex determination (TSD) epitomizes phenotypic plasticity where environmental temperature drives embryonic sexual fate, as occurs commonly in turtles. Importantly, the temperature-specific transcription of two genes underlying gonadal differentiation is known to be induced by differential methylation in TSD fish, turtle and alligator. Yet, how extensive is the link between DNA methylation and TSD remains unclear...
2017: Epigenetics & Chromatin
https://www.readbyqxmd.com/read/28533420/igf1-stimulates-greater-muscle-hypertrophy-in-the-absence-of-myostatin-in-male-mice
#15
Alexander Hennebry, Jenny M Oldham, Tea Shavlakadze, Miranda Grounds, Philip Sheard, Marta Fiorotto, Shelley J Falconer, Heather K Smith, Carole Berry, Ferenc Jeanplong, Jeremy Bracegirdle, Kenneth G Matthews, Gina Nicholas, Monica Senna-Salerno, Trevor Watson, Christopher D McMahon
Insulin-like growth factors (IGFs) and myostatin have opposing roles in regulating the growth and size of skeletal muscle, with IGF1 stimulating, and myostatin inhibiting, growth. However, it remains unclear whether these proteins have mutually dependent, or independent, roles. To clarify this issue, we crossed myostatin null (Mstn-/-) mice with mice over-expressing Igf1 in skeletal muscle (Igf1+) to generate six genotypes of male mice; wild-type (Mstn+/+), Mstn+/-, Mstn-/-, Mstn+/+:Igf1+, Mstn+/-:Igf1+ and Mstn-/-:Igf1+...
May 22, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28529912/female-gonadal-hormone-effects-on-microglial-activation-and-functional-outcomes-in-a-mouse-model-of-moderate-traumatic-brain-injury
#16
Odera Umeano, Haichen Wang, Hana Dawson, Beilei Lei, Afoma Umeano, Dawn Kernagis, Michael L James
AIM: To address the hypothesis that young, gonad-intact female mice have improved long-term recovery associated with decreased neuroinflammation compared to male mice. METHODS: Eight to ten week-old male, female, and ovariectomized (OVX) mice underwent closed cranial impact. Gonad-intact female mice were injured only in estrus state. After injury, between group differences were assessed using complementary immunohistochemical staining for microglial cells at 1 h, mRNA polymerase chain reaction for inflammatory markers at 1 h after injury, Rotarod over days 1-7, and water maze on days 28-31 after injury...
May 4, 2017: World Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28528414/tissue-contaminant-burdens-in-san-francisco-estuary-white-sturgeon-acipenser-transmontanus-implications-for-population-recovery
#17
Deke T Gundersen, Steven C Zeug, Robert B Bringolf, Joseph Merz, Zachary Jackson, Molly A H Webb
The San Francisco Estuary (SFE) is heavily influenced by anthropogenic activities, including historic and chronic contaminant inputs. These contaminants can adversely affect SFE fish populations, particularly white sturgeon, because they are a benthic dwelling, long-lived species. We measured a suite of metals and organic contaminants in liver and gonad tissues of 25 male and 32 female white sturgeon as well as several physiological indicators of sturgeon health. Most sturgeon (68% of males and 83% of females) were estimated to be between 13 and 17 years of age...
May 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28528022/direct-effect-of-curcumin-on-porcine-ovarian-cell-functions
#18
Attila Kádasi, Nora Maruniaková, Aneta Štochmaľová, Miroslav Bauer, Roland Grossmann, Abdel Halim Harrath, Adriana Kolesárová, Alexander V Sirotkin
Curcuma longa Linn (L.) is a plant widely used in cooking (in curry powder a.o.) and in folk medicine, but its action on reproductive processes and its possible mechanisms of action remain to be investigated. The objective of this study was to examine the direct effects of curcumin, the major Curcuma longa L. molecule, on basic ovarian cell functions such as proliferation, apoptosis, viability and steroidogenesis. Porcine ovarian granulosa cells were cultured with and without curcumin (at doses of 0, 1, 10 and 100μg/ml of medium)...
May 12, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28527702/crispr-cas9-induced-disruption-of-wt1a-and-wt1b-reveals-their-different-roles-in-kidney-and-gonad-development-in-nile-tilapia
#19
Dongneng Jiang, Jinlin Chen, Zheng Fan, Dejie Tan, Jiue Zhao, Hongjuan Shi, Zhilong Liu, Wenjing Tao, Minghui Li, Deshou Wang
Wilms tumor 1 (Wt1) is an essential factor for urogenital system development. Teleosts have two wt1s, named as wt1a and wt1b. In this study, the expression pattern of wt1a and wt1b and their functions on the urogenital system were analyzed by in situ hybridization and CRISPR/Cas9. wt1a was found to be expressed in the glomerulus at 3 dah (days after hatching), earlier than wt1b. wt1a and wt1b were simultaneously expressed in the somatic cells of gonads at 3 dah, while their cell locations were similar, but not identical in adult fish gonads...
May 17, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28525341/morphological-analysis-of-testicles-in-cats-with-disorders-of-sex-development
#20
S Dzimira, W Nizanski, J A Madej
Disorders of sex development (DSD) are rare in cats. They can be caused by chromosomal aberrations, gene mutations or other undefined factors. The aim of the present study was to compare the histological structure and immunohistochemical reactivity of testes in cats with DSD and in healthy cats. The research material consisted of the gonads of four cats - phenotypic males with an incorrect structure of the reproductive system. The control group consisted of the testes of four healthy cats - routinely castrated phenotypical males...
March 28, 2017: Polish Journal of Veterinary Sciences
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